<template>
  <Dialog v-model="dialogVisible" :title="dialogTitle">
    <el-form
      ref="formRef"
      v-loading="formLoading"
      :model="formData"
      :rules="formRules"
      label-width="120px"
    >
      <el-row>
        <el-col :span="24">
          <el-form-item label="栏目名称" prop="names">
            <el-input v-model="formData.names" 
            type="textarea"
            :rows="3"
            placeholder="请输入栏目名称 空格隔开名称" />
          </el-form-item>
        </el-col>
      </el-row>
      <el-row>
        <el-col :span="24">
          <el-form-item
            prop="channelId"
            label="参考栏目"
            :rules="[
              { required: true, message: () => t('common.required') }
            ]"
          >
            <el-tree-select
              v-model="formData.channelId"
              :data="channelList"
              node-key="id"
              :props="{ label: 'name' }"
              :render-after-expand="false"
              class="w-full"
              placeholder="请选择参考栏目"
            />
          </el-form-item>
        </el-col>
      </el-row>
      <el-row>
        <el-col :span="24">
          <el-form-item
            prop="parentId"
            label="目标父栏目"
          >
            <el-tree-select
              v-model="formData.parentId"
              :data="channelList"
              node-key="id"
              :props="{ label: 'name' , disabled: 'disabled'}"
              :render-after-expand="false"
              check-strictly
              clearable
              class="w-full"
              placeholder="请选择目标父栏目"
            />
          </el-form-item>
        </el-col>
      </el-row>
    </el-form>
    <template #footer>
      <el-button :disabled="formLoading" type="primary" @click="submitForm">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script lang="ts" setup>
import { FormRules } from 'element-plus'
import { toTree } from '@/utils/cmstree'
import * as ChannelApi from '@/api/cms/channel'
defineOptions({ name: 'SystemUserForm' })

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('') // 弹窗的标题
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formData = ref({
  names: '',
  parentId: undefined,
  channelId: undefined
})
const formRules = reactive<FormRules>({
  names: [{ required: true, message: '名称不能为空', trigger: 'blur' }],
  channelId: [{ required: true, message: '参考栏目不能为空', trigger: 'blur' }],
})
const formRef = ref() // 表单 Ref
const channelList = ref<any[]>([])
/** 打开弹窗 */
const open = async () => {
  dialogVisible.value = true
  dialogTitle.value = "批量创建栏目"
  resetForm()
  fetchChannelList()
}
const fetchChannelList = async () => {
  channelList.value = toTree(await ChannelApi.getChannelListApi())
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  // 校验表单
  if (!formRef) return
  const valid = await formRef.value.validate()
  if (!valid) return
  // 提交请求
  formLoading.value = true
  try {
    const data = formData.value as unknown as ChannelApi.ChannelBatchCreateVO
    await ChannelApi.batchCreateChannelApi(data)
    message.success(t('common.updateSuccess'))
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    names: '',
    parentId: undefined,
    channelId: undefined
  }
  formRef.value?.resetFields()
}
</script>
